Anti-PAGR1 (PA1) from rabbit

PAXIP1-associated glutamate-rich protein 1 (UniProt: Q9BTK6; also known as Glutamate-rich co-activator interacting with SRC1, GAS, PAXIP1-associated protein 1, PTIP-associated protein 1) is encoded by the PAGR1 (also known as C16orf53, PA1) gene (Gene ID: 79447) in human. It associates with the histone methyltransferase MLL3/4 complex, which suggests that it plays a role in epigenetic and transcriptional activation. However, in association with PAXIP1/PTIP is proposed to function at least in part independently of the MLL3/4 complex. It is proposed to be recruited by PAXIP1 to sites of DNA damage where the PAGR1:PAXIP1 complex is required for cell survival in response to DNA damage independently of the MLL3/4 complex. During immunoglobulin class switching in activated B-cells, it is involved in transcription regulation of downstream switch regions at the immunoglobulin heavy-chain (Igh) locus independently of the MLL3/4 complex. PAGR1 protein is reported to act as a transcriptional cofactor for estrogen receptor. It interacts with GR (NR3C1) and inhibits the GR transactivation.